Skip to content
Independent guidance for Pakistan's healthcare students
Student forum · Coming soonAggregate calculator
Medical AdmissionPAKISTAN
Practice MDCAT

LEARN AT YOUR OWN PACE

MDCAT Question Bank

Think through each question, then reveal the answer and explanation.

Take a practice test →

Use the MDCAT Question Bank to study by subject and try each question yourself.
Click Show Answer to check the correct choice, then take a practice test when you’re ready.

1009 available questions

Chemistry · Question 11

The change in conentration of reactants or products per unit time is:

  1. rate constant
  2. reaction speed
  3. Rate of a reaction
  4. All of these
Show AnswerHide Answer

Correct answer: C

Rate of a reaction

Chemistry · Question 12

A cathode has the reduction potential:

  1. Less than the anode
  2. More than the anode
  3. Same as that of anode
  4. zero
Show AnswerHide Answer

Correct answer: B

More than the anode

Chemistry · Question 13

What are the products of destructive distillation of coal?

  1. Coal tar
  2. Coke
  3. Coal gas
  4. All of above
Show AnswerHide Answer

Correct answer: D

All of above

Chemistry · Question 14

ΔHr is the standard enthalpy change of which of the following process?

  1. When 1 mol of compound formed from its elements
  2. When 1 mole of substance is dissolved to make a solution
  3. When 1 mole of Reactants are converted into prodcuts
  4. When 1 mole of salt is formed
Show AnswerHide Answer

Correct answer: C

When 1 mole of Reactants are converted into prodcuts

Chemistry · Question 15

Free radial reactions take place in the presense of ______________?

  1. Heat
  2. Sun light
  3. Catalyst
  4. Oxygen
Show AnswerHide Answer

Correct answer: B

Sun light

Chemistry · Question 16

The value of heat of neutralization of strong acid with a strong base is always____________?

  1. Constant
  2. Variable
  3. Depends on the strength of acid
  4. Depends on the strength of base
Show AnswerHide Answer

Correct answer: A

Constant

Chemistry · Question 17

The shielding effect is also called

  1. Zee effect
  2. Screening effect
  3. negative effect
  4. reducing effect
Show AnswerHide Answer

Correct answer: B

Screening effect

Chemistry · Question 18

Which one of theme can conduct electricity in solid state:

  1. diamond
  2. graphite
  3. Nail
  4. iodine
Show AnswerHide Answer

Correct answer: B

graphite

Chemistry · Question 19

Isoenzymes comes from ___________________?

  1. Same sources
  2. Different organisms
  3. Same organisms
  4. None of these
Show AnswerHide Answer

Correct answer: C

Same organisms

Chemistry · Question 20

If a molecule contains 4 electron pairs, The shape of molecule will be

  1. Tetrahedral
  2. trigonal
  3. linear
  4. None of these
Show AnswerHide Answer

Correct answer: D

None of these